摘要
采用电化学还原－中和絮凝－生化－粉煤灰吸附法处理分散染料废水，处理效果较好。在废水初沉后ＣＯＤ为２８００－３２００ｍｇ／Ｌ、色度为２０００倍的情况下，处理出水ＣＯＤ＜２００ｍｇ／Ｌ，色度低于２０倍。试验结果表明，电化学还原对废水脱色有明显的效果；废水中的分散染料可生化性好，对生化过程无明显的抑制作用；粉煤灰有良好的吸附性能，对废水中ＣＯＤ的吸附能力可达到２０ｍｇ／ｇ。
The wastewater discharged from disperse dyestaff production could be effectivelytreated by electrochemical reduction-neutralization/flocculation-biological oxidation-flyashadsorption processes。COD and colourity of the wastewater after primary sedimentation were2800-3200mg/ L and 2000 times respectively,and reduced to 200mg/Land 20 times in thefinal effluent.The experiment results showed that high decolourization of the wastewater byelectrochemical reduction could be achieved; the wastewater became better biodegradablewithout obvious inhibition to biological process;flyash had a good adsorption capacity ashigh as 20mg COD/g flyash.
出处
《化工环保》
CAS
CSCD
北大核心
1995年第5期259-264,共6页
Environmental Protection of Chemical Industry
关键词
染料废水
电化学还原
中和絮凝
吸附
废水处理
disperse dyestaff wastewater,electrochemical reduction,neutralization,flocculation,SBR process, adsorption.
